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B. Cosmic Tables

time limit per test

3 secondsmemory limit per test

256 megabytesinput

standard inputoutput

standard outputThe Free Meteor Association (FMA) has got a problem: as meteors are moving, the Universal Cosmic Descriptive Humorous Program (UCDHP) needs to add a special module that would analyze this movement.

UCDHP stores some secret information about meteors as an *n* × *m* table with integers in its cells. The order of meteors in the Universe is changing. That's why the main UCDHP module receives the following queries:

- The query to swap two table rows;
- The query to swap two table columns;
- The query to obtain a secret number in a particular table cell.

As the main UCDHP module is critical, writing the functional of working with the table has been commissioned to you.

Input

The first line contains three space-separated integers *n*, *m* and *k* (1 ≤ *n*, *m* ≤ 1000, 1 ≤ *k* ≤ 500000) — the number of table columns and rows and the number of queries, correspondingly.

Next *n* lines contain *m* space-separated numbers each — the initial state of the table. Each number *p* in the table is an integer and satisfies the inequality 0 ≤ *p* ≤ 10^{6}.

Next *k* lines contain queries in the format "*s*_{i} *x*_{i} *y*_{i}", where *s*_{i} is one of the characters "с", "r" or "g", and *x*_{i}, *y*_{i} are two integers.

- If
*s*_{i}= "c", then the current query is the query to swap columns with indexes*x*_{i}and*y*_{i}(1 ≤*x*,*y*≤*m*,*x*≠*y*); - If
*s*_{i}= "r", then the current query is the query to swap rows with indexes*x*_{i}and*y*_{i}(1 ≤*x*,*y*≤*n*,*x*≠*y*); - If
*s*_{i}= "g", then the current query is the query to obtain the number that located in the*x*_{i}-th row and in the*y*_{i}-th column (1 ≤*x*≤*n*, 1 ≤*y*≤*m*).

The table rows are considered to be indexed from top to bottom from 1 to *n*, and the table columns — from left to right from 1 to *m*.

Output

For each query to obtain a number (*s*_{i} = "g") print the required number. Print the answers to the queries in the order of the queries in the input.

Examples

Input

3 3 5

1 2 3

4 5 6

7 8 9

g 3 2

r 3 2

c 2 3

g 2 2

g 3 2

Output

8

9

6

Input

2 3 3

1 2 4

3 1 5

c 2 1

r 1 2

g 1 3

Output

5

Note

Let's see how the table changes in the second test case.

After the first operation is fulfilled, the table looks like that:

2 1 4

1 3 5

After the second operation is fulfilled, the table looks like that:

1 3 5

2 1 4

So the answer to the third query (the number located in the first row and in the third column) will be 5.

Codeforces (c) Copyright 2010-2018 Mike Mirzayanov

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